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——8小时内,血液中CO_2含量减少到正常水平,血中O_2含量也增加到正常水平。——24小时内,心脏病,动脉粥样硬化发作机会减少。
- Within 8 hours, the CO 2 level in the blood is reduced to the normal level, and the O_2 level in the blood is also increased to the normal level. - Within 24 hours, there is less chance of heart attack or atherosclerosis attack.